Ratchet-drill stock and screw-driver.



vPatented May I3, |902.

No. 699,7I.

B. NVIN.

RATCHET DRILL STOCK AND SCREW DRIVER.

(Application led Feb. 13, 1902.)

(No Model.)

Vif 125595 llaman 'raras 1 FFICE.

arent BRANDT NOVIN, OF CAMBRIDGEPORT, MASSACHUSETTS.

SPECIFICATION forming part of' Letters Patent No. 699,701, dated May 13,1902. Application filed February 13, 1902. Serial N0- 93,954. (Nomodel.)

T0 all 7071/071@ it may concern.-

Be it known that I, BRANDT NOVIN, a citizen of Sweden, and a resident ofCambridgeport, in the county of Middlesex and State ofMassachusetts,have invented certain new and useful Improvements inRatchet-Drill Stocks and Screw-Drivers, of which the following is aspecification. Y

This invention relates to improvements in ratchet-drill stocks andscrew-drivers; and it is carried out as follows, reference being had tothe accompanying drawings, wherein- Figure l is a top plan view of thedevice, parts being shown in section; and Fig. 2 is a longitudinalsection of Fig. l.

Similar letters refer to similar parts wherever they occur on thedierent parts of the l drawings.

In the drawings, A represents the tool-handle, to which is secured in asuitable manner the tongue B, to which is secured a slitted shank,preferably composed of two plates C C',secured to or made integral withthe tongue B, as may be desired. To said slitted shank is detachablysecured a metal blade D, preferably by means of a headed screw-bolt E,passing loosely through a perforation made in the plates C C' and bladeD and provided at its end with a thumb-nut E', by means of which thesaid blade D may be firmly secured to said plates C C', as shown.

In practice I make on the inner end of the blade D a tooth or projectionCZ, adapted to interlock into a notch or recess b at the outer end ofthe tongue B, as shown, and by such arrangement and the clamping-bolt Ethe blade D is firmly secured to the slitted shank C C' and tongue B, soas to make arigid connection between such parts when so desired.

To opposite sides of the blade D are firmly secured the metal plates Fand F', the outer ends of which are preferably made cylindrical, asshown in Fig. l.

G in Fig. 2 is the tool-holding chuck or socket, having a recess ofsuitable size or shape into which the screw-driver H or other suitabletool, such as a drill or screw tap, may be inserted and secured,preferably by means of a set-screw or thumb-screw g, as shown in Fig. 2.

G' is the shank of the tool-holder G, and

such shank is journaled iu cylindrical perforations in the plates F F',as shown in Fig. 2.

In the space between the plates F F' is located a serrated or ratchetwheel I, which is attached to the shank G' and its socket or chuck G inany suitable manner. It will thus be seen that by imparting a rotarymotion in either direction to the ratchet-wheel I a corresponding rotarymotion is imparted to the chuck or socket G and the tool secured to thesame. In connection with said ratchetwheel I is used a spring-pressedpawl-carrier K, which is pivoted to the plates F F', 'preferably bymeans of a pin or screw L. Said pawl-carrier is provided with pawls 7oand 7c', adapted to engage with the ratchet-wheel I. M is a coiledspring, one end of which is attached to a pin or projection f on theplate F and having its other end attached in a suitable manner,preferably to an adjustable post or block K', which is capable ofadjustment by means of a screw N, passing through a screw-threadedperforation in said post K' and journaled in suitable bearings attachedto or forming part of the pawl-carrier K, as shown. By means of suchadjustable post K' the tension of the spring M may be regulated as maybe desired.

The shank G' of the chuck or socket G is internally screw threaded, andinto it is screwed the feed-screw O, the outer end of which is adaptedto rest against a suitable support P during the operation of the device,as shown in Fig. 2. The said feed-screw may be adjusted either byapplying a wrench to its head or by means of a pin or rod Q, insertedthrough a perforation in the head of .said screw, as shown in Figs. land 2.

. In Fig. 2 Ihave shown the device as applied for the purpose of ascrew-driver to screw a screw R into or out from a screw-threadedperforation in a metal piece S; but the device is of course equallyuseful for drilling or tapping purposes, as may be desired. By movingthe handle A in the direction of the arrow shown in Fig. l and byswinging the pawl-carrier K to the position shown in Fig.

l the :ratchet-wheel I and the chuck G are caused to move in thedirection of arrow shown in Fig. l, thus causing the screw R to beunscrewed from the plate or other object IOG S. If it is desired to turnthe chuck G in an opposite direction to that shown by the arrow in Fig.1, it is only necessary to swing the pawl-carrier K to its oppositedirection, so as to cause the pawl 7c' to engage With the ratchetwheelI, where it will be held by the iniiuence ofthe spring'iM. It will thusbe seen that by reciprocating the handle A an intermittent rotary motionmay be imparted in either direction to the socket or chuck G, as may berequired. B y adjusting the position of the screw O relative to thescrew-threaded shank G a longitudinal adjustment or feed is imparted tothe chuck or socket G in either direction, as may be desired.

What I wish to secure by Letters Patent and claim is Theherein-described ratchet-drill stock, consisting in combination a tongueor handle B, a slitted extension C, C', attached to or made integralwith the part B, ablade D, secured 'to said slitted extension, a pair ofplates F, F', secured to the blade D, a socket G journaled on saidplates and having secured to it a ratchet-Wheel I, and provided with afeedscrew O, a paWl-carrier K pivoted to said plates and provided withpawls k and k, adapted to be swung into engagement with theratchet-Wheel I and provided with a spring M, for holding either of saidpawls in engagement with the ratchet-Wheel I, substantially as and forthe purpose set forth.

In testimony whereof I have aiiixed my signature in presence of twowitnesses.

BRANDT NOVIN. Vitnesses:

ALBAN ANDRN, CHARLES L. ABBOTT.

